.btn(ie,@ie:9){
  & when ( @ie < 8){box-sizing: content-box;}//imp
  & when ( @ie >= 8){box-sizing: border-box;}//imp
  font-family: sans-serif;font-size: 10pt;text-align: center;
  & when ( @ie = 6 ){
    border-style: outset;border-width: 2px;
    background-color: #D4D0C8;
  }
  & when ( @ie = 7 ){
    border-width: 2px;background-color: #F0F0F0;
  }
  & when ( @ie = 8 ){
    padding: 1px 8px;border-width: 3px;
    background-color: #F0F0F0;
  }
  & when ( @ie = 9 ){
    padding: 1px 8px;border-width: 3px;
    background-color: #F0F0F0;
  }
  overflow: hidden;zoom: 1;
}
.btn(opera){
  display: inline-block;
  font: 400 13px use-lang-def;
  white-space: nowrap;
  text-align: center;text-indent: 0;
  padding: 1px 8px;
  border-width: 2px;
  color: #000;
}
.btn(webkit){
  -webkit-appearance: button;
  -webkit-writing-mode: horizontal-tb !important;
  box-sizing: border-box;//imp
  display: inline-block;
  font: 400 13.3333px Arial;
  letter-spacing: normal;word-spacing: normal;
  text-rendering:auto;text-transform:none;text-indent:0px;text-shadow:none;text-align:center;
  align-items: flex-start;
  margin: 0em;
  padding: 1px 6px;
  border:2px outset buttonface;
  border-image: initial;
  background-color: buttonface;
  color: buttontext;
  cursor: default;
}